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<FONT color="green">001</FONT>    // Copyright 2007 Waterken Inc. under the terms of the MIT X license<a name="line.1"></a>
<FONT color="green">002</FONT>    // found at http://www.opensource.org/licenses/mit-license.html<a name="line.2"></a>
<FONT color="green">003</FONT>    package org.waterken.serial;<a name="line.3"></a>
<FONT color="green">004</FONT>    <a name="line.4"></a>
<FONT color="green">005</FONT>    import static org.ref_send.promise.Eventual.ref;<a name="line.5"></a>
<FONT color="green">006</FONT>    import static org.ref_send.test.Logic.join;<a name="line.6"></a>
<FONT color="green">007</FONT>    import static org.ref_send.test.Logic.was;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    import org.joe_e.array.ConstArray;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.ref_send.list.List;<a name="line.10"></a>
<FONT color="green">011</FONT>    import org.ref_send.promise.Eventual;<a name="line.11"></a>
<FONT color="green">012</FONT>    import org.ref_send.promise.Promise;<a name="line.12"></a>
<FONT color="green">013</FONT>    <a name="line.13"></a>
<FONT color="green">014</FONT>    /**<a name="line.14"></a>
<FONT color="green">015</FONT>     * Eventual invocation tests.<a name="line.15"></a>
<FONT color="green">016</FONT>     * &lt;p&gt;<a name="line.16"></a>
<FONT color="green">017</FONT>     * This class provides an introduction to eventual operations by using them to<a name="line.17"></a>
<FONT color="green">018</FONT>     * test the elements of a series that isn't produced until later. Within these<a name="line.18"></a>
<FONT color="green">019</FONT>     * lines, time and space are not just curved, they're bent. You should also<a name="line.19"></a>
<FONT color="green">020</FONT>     * probably save this example until later.<a name="line.20"></a>
<FONT color="green">021</FONT>     * &lt;/p&gt;<a name="line.21"></a>
<FONT color="green">022</FONT>     */<a name="line.22"></a>
<FONT color="green">023</FONT>    public final class<a name="line.23"></a>
<FONT color="green">024</FONT>    PopPushN {<a name="line.24"></a>
<FONT color="green">025</FONT>        private PopPushN() {}<a name="line.25"></a>
<FONT color="green">026</FONT>        <a name="line.26"></a>
<FONT color="green">027</FONT>        /**<a name="line.27"></a>
<FONT color="green">028</FONT>         * Runs a unit test.<a name="line.28"></a>
<FONT color="green">029</FONT>         * @param _ eventual operator<a name="line.29"></a>
<FONT color="green">030</FONT>         * @param n number of test iterations<a name="line.30"></a>
<FONT color="green">031</FONT>         */<a name="line.31"></a>
<FONT color="green">032</FONT>        static public Promise&lt;?&gt;<a name="line.32"></a>
<FONT color="green">033</FONT>        make(final Eventual _, final int n) {<a name="line.33"></a>
<FONT color="green">034</FONT>            final Series&lt;Integer&gt; x = Serial.make(_);<a name="line.34"></a>
<FONT color="green">035</FONT>            <a name="line.35"></a>
<FONT color="green">036</FONT>            /*<a name="line.36"></a>
<FONT color="green">037</FONT>             * Check that the first n integers in the series will be the<a name="line.37"></a>
<FONT color="green">038</FONT>             * numbers from 0 through n.<a name="line.38"></a>
<FONT color="green">039</FONT>             */<a name="line.39"></a>
<FONT color="green">040</FONT>            final ConstArray.Builder&lt;Promise&lt;?&gt;&gt; r = ConstArray.builder();<a name="line.40"></a>
<FONT color="green">041</FONT>            for (int i = 0; i != n; ++i) {<a name="line.41"></a>
<FONT color="green">042</FONT>                r.append(_.when(x.consume(), was(i)));<a name="line.42"></a>
<FONT color="green">043</FONT>            }<a name="line.43"></a>
<FONT color="green">044</FONT>            <a name="line.44"></a>
<FONT color="green">045</FONT>            /*<a name="line.45"></a>
<FONT color="green">046</FONT>             * Append the numbers 0 through n to the series.<a name="line.46"></a>
<FONT color="green">047</FONT>             */<a name="line.47"></a>
<FONT color="green">048</FONT>            for (int i = 0; i != n; ++i) {<a name="line.48"></a>
<FONT color="green">049</FONT>                x.produce(ref(i));<a name="line.49"></a>
<FONT color="green">050</FONT>            }<a name="line.50"></a>
<FONT color="green">051</FONT>            <a name="line.51"></a>
<FONT color="green">052</FONT>            return join(_, r.snapshot().toArray(new Object[0]));<a name="line.52"></a>
<FONT color="green">053</FONT>        }<a name="line.53"></a>
<FONT color="green">054</FONT>        <a name="line.54"></a>
<FONT color="green">055</FONT>        // Command line interface<a name="line.55"></a>
<FONT color="green">056</FONT>    <a name="line.56"></a>
<FONT color="green">057</FONT>        /**<a name="line.57"></a>
<FONT color="green">058</FONT>         * Executes the test.<a name="line.58"></a>
<FONT color="green">059</FONT>         * @param args  argument string<a name="line.59"></a>
<FONT color="green">060</FONT>         * @throws Exception    test failed<a name="line.60"></a>
<FONT color="green">061</FONT>         */<a name="line.61"></a>
<FONT color="green">062</FONT>        static public void<a name="line.62"></a>
<FONT color="green">063</FONT>        main(final String[] args) throws Exception {<a name="line.63"></a>
<FONT color="green">064</FONT>            final int n = args.length &gt; 0 ? Integer.parseInt(args[0]) : 4;<a name="line.64"></a>
<FONT color="green">065</FONT>            <a name="line.65"></a>
<FONT color="green">066</FONT>            final List&lt;Promise&lt;?&gt;&gt; work = List.list();<a name="line.66"></a>
<FONT color="green">067</FONT>            final Promise&lt;?&gt; result = make(new Eventual(work.appender()), n);<a name="line.67"></a>
<FONT color="green">068</FONT>            while (!work.isEmpty()) { work.pop().call(); }<a name="line.68"></a>
<FONT color="green">069</FONT>            result.call();<a name="line.69"></a>
<FONT color="green">070</FONT>        }<a name="line.70"></a>
<FONT color="green">071</FONT>    }<a name="line.71"></a>




























































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